Her ex-boyfriend, Todd, shows up. Nelly is happy to see him. He wants to talk to her. Nelly is happy and thanks Blair. Unfortunately, Nelly doesn't know Blair's plan. Nate and Vanessa are walking together and having a good time. He asks Vanessa why she takes SATs practice tests without the intention of taking the real SATs. They continue to have a good time until they get to Vanessa's workplace. They share their first kiss here. Serena and Georgina are having dinner. To Serena's surprise, Georgina refuses a cocktail. Serena tells her more about Dan and their relationship. Serena goes to call Dan. Georgina slips a drug into Serena's soda. They drink to the new Serena. The next morning, Serena wakes up wondering where she is. Georgina comes in and Serena panics about the SATs. She calls Chuck and asks him to help out and try to keep the doors open for her. Nate meets Vanessa at her restaurant. Nate wants to take her somewhere. Vanessa decides to go along with him. Rufus and Jenny are eating breakfast. She is still angry at him. Jenny asks again to let her go. Rufus makes her cancel with Asher. Nate takes Vanessa to the SATs. He convinces her to take it to have options. Nelly Yuki shows up and Blair asks her how her night was. Todd doesn't want to get back together and Nelly stayed up all night crying. Blair takes the batteries from her calculator. Blair asks Dan where Serena is, but he doesn't know. Dan starts to leave Serena a voicemail. He then sees a girl claim she is Serena van der Woodsen. Blair and Dan spot Nate and Vanessa together getting into a limo. Dan goes to Serena and Chuck's. Serena tells him that she had a food poisoning relapse. He confronts her about a girl getting paid to be her. Chuck did it and Serena didn't know. Dan wants to understand what's going on, but Serena says they'll talk tomorrow. Serena tells Chuck that he went too far. Apparently, there's something so bad between Georgina and Serena that she can't tell anyone. Serena shows up at Georgina's. She tells her that she never wants to see her again. Georgina brings up the incident and Serena says that if she goes down, Georgina's going down with her. Serena tells her to stay out of her life. Asher comes